Update vitest monorepo to v3 (major) (#23803)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

package.json

@@ -186,7 +186,7 @@
     "@types/webspeechapi": "0.0.29",
     "@typescript-eslint/eslint-plugin": "8.20.0",
     "@typescript-eslint/parser": "8.20.0",
-    "@vitest/coverage-v8": "2.1.8",
+    "@vitest/coverage-v8": "3.0.1",
     "babel-loader": "9.2.1",
     "babel-plugin-template-html-minifier": "4.1.0",
     "browserslist-useragent-regexp": "4.1.3",
@@ -225,7 +225,7 @@
     "terser-webpack-plugin": "5.3.11",
     "ts-lit-plugin": "2.0.2",
     "typescript": "5.7.3",
-    "vitest": "2.1.8",
+    "vitest": "3.0.1",
     "webpack-stats-plugin": "1.1.3",
     "webpackbar": "7.0.0",
     "workbox-build": "patch:workbox-build@npm%3A7.1.1#~/.yarn/patches/workbox-build-npm-7.1.1-a854f3faae.patch"